[2] Mikati founded T-One, a US-based telecommunications company specialising in international services in 1994, whilst studying engineering at Columbia University.
Under Mikati's leadership, the company's sales grew from $30 million to close to $1 billion.
In 2005, Investcom was added to the Dubai International Financial Exchange and the London Stock Exchange (LSE) in what was known to be the largest listing of a Middle Eastern company on the LSE, making Mikati the youngest CEO of a publicly traded Middle Eastern company at the time.
[2] The following year, Investcom was bought by the leading African mobile operator MTN for $5.5 billion.
In addition to holding a 10% stake in the South Africa-based telecommunications company MTN, M1 Group is invested in various sectors and geographies such as real estate, aviation, cement, fashion, retail, energy and banking.